ML20117H723

Monthly Operating Rept for Apr 1996 for Davis-Besse Unit 1

ML20117H723
Person / Time
Site:	Davis Besse
Issue date:	04/30/1996
From:	Wolf G, Jeffery Wood TOLEDO EDISON CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
KB-96-0106, KB-96-106, NUDOCS 9605290093
Download: ML20117H723 (5)

Text

_._ _

. o TOLEDO

% IEEllEiCIPd A Centerior Energy Cornpany EDISON PLAZA 300 MADISON AVENUE TOLEDO, OHIO 43652-0001 I

l May 14, 1996 .

KB-96-0106 Docket No. 50-346 License No. NPF-3 l

l U.S. Nuclear Regulatory Commission Document Control Desk Washington, D.C. 20555 l

Gentlemen:

1 Monthly Operating Report, April 1996 j Davis-Besse Nuclear Power Station Unit 1 l Enclosed is a copy of the Monthly Operating Report for Davis-Besse Nuclear Power Station Unit No. 1 for rhe month of April 1996.

If you have any questions, please contact G. M. Wolf at (419) 321-8114.

l Very truly yours, l

I

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'V _

John K. Wood Plant Manager Davis-Besse Nuclear Power Station GMW/dmc Enclosures cc: L. L. Gundrum NRC Project Manager H. J. Miller Region III Administrator S. Stasek NRC Senior Resident Inspector, Stop 4030 9605290093 960430-PDR ADOCK 05000346 r

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AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-0346 I

l UNIT Davis-Besse Unit 1 DATE May 1,1996 COMPLETED BY Gerald M. Wolf l TELEPHONE 419/321-8114 MONTH April,1996 AVERAGE DAILY POWER LEVEL AVERAGE DAILY POWER LEVEL DAY (MWe-Net) DAY (MWe-Net) 1 729 16 0 _

2 720 17 0 3 714 18 0 4 707 19 0 _

l 5 696 20 0 6 _

691 21 0 _

7 495 22 0

]

8 2 23 _

0 9 0 24 0 __

10 0 25 0 _.

11 0 26 0 12 0 27 __

0 __

l l

l 13 0 28 ._

0 _ _ _ _ _ _

14 _

0 _

29 0 __

15 0 30 0 l

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OPERATING DATA REPORT DOCKET NO _50-0346 DATE _May 1,1996 COMPLETED BY Gerald M. Wolf TELEPHONE 419/321-8114

1. Unit Name: Davis-Besse Unit 1 Notes

2. Reporting Period April,1996

3. Licensed Thermal Power (MWt) 2772 4._Namepla_te Rating (Gross MWe) 925

5. Design Electrical Rating (Net MWe) 906 6._ Maximum Dependable CapacityjGross_MWe) 915

7. Maximum Dependable CapacityJNet MWe) 871

8. If Changes Occur in Cap _acity Ratings i (Items number 3 through 7) since last report, give reasons:

i

9. Power Level To Which Restricted, if Any (Net MWe):

10. Reasons For Restrictions, if Any (Net MWe):

l This Month Yr-to-Date Cumulative

11. Hours in Reporting Period 719.00 2,903.00 155,616.00

12. Number Of Hours Reactor Was Critical 173.97 2,357.97 101,063.73

13. Reactor Reserve Shutdown Hours 0.00 0.00 5,532.00

14. Hours Generator On-Line 168.98 2,352.98 98,803.88

15. Unit Reserve Shutdown Hours 0.00 0.00 1,732.50 l 16. Gross Thermal Energy Generated (MWH) 360,582 6,307,520 256,545,428

17. Gross Electrical Energy Generated (MWH) 121,460 2,114,220 83,248,322

18. Net Electrical Energy Generated (MWH) 110,539 2,004,567 78,586,507

19. Unit Service Factor 23.50 81.05 63.49

20. Unit Availability Factor 23.50 81.05 64.61

21. Unit Capacity Factor (Using MDC Net) 17.65 79.28 57.98

22. Unit Capacity Factor (Using DER Net) 16.97 76.22 55.74 ,

l 23. Unit Forced Outage Rate 0.00 0.00 18.01 1

24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each): i l 25. If Shut Down At End Of Report Period, Estimated Date of Startup: May 24,1996 l

26. Units in Test Status (Prior to Commercial Operation): j Forecast Achieved )

i INITIAL CRITICALITY '

INITIAL ELECTRICITY COMMERCIAL OPERATION l

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l l

OPERATIONAL

SUMMARY

April,1996 l

l The end of cycle coastdown continued into April,1996, with Reactor power starting the month at approximately 83 percent full power. Reactor power l continued to be manually reduced approximately one percent per day to maintain the desired Control Rod Drive index. On April 7 at 0938 hours0.0109 days <br />0.261 hours <br />0.00155 weeks <br />3.56909e-4 months <br />, a plant shutdown was initiated to start the Tenth Refueling Outage. Reactor power was manually reduced from approximately 78 percent full power while the Reactor Coolant System (RCS) average temperature was slowly raised from 576 to 582 degrees Fahrenheit. RCS average temperature was restored to 582 degrev st 1529 hours0.0177 days <br />0.425 hours <br />0.00253 weeks <br />5.817845e-4 months <br /> on April 7. The Main Turbine was  !

manually tripped at 0059 hours6.828704e-4 days <br />0.0164 hours <br />9.755291e-5 weeks <br />2.24495e-5 months <br /> on April 8, and the Reactor was fully shutdown at 0558 hours0.00646 days <br />0.155 hours <br />9.22619e-4 weeks <br />2.12319e-4 months <br />. The Reactor remained shutdown for the rest of the month.

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UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO.: 50-346 UNIT NAME: Davis-Besse #1

• DATE: May 1.1996 Completed by: G. M. Wolf

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Report Month Anril 1996 Telephone: (419) 321-8114 5O c

gy e .E =

Licensee E 'o y Cause & Corrective o Event 8 =o g yg y ,p g y g8 g, g Action to

>. u ytggg No. Date H g; - o m E u aO e Report # Prevent Recurrence Q

6 l 96-04-07 S 0 C 5 N/A N/A N/A Plant shutdown initiated to start maintenance and refueling outage.

2 96-04-08 S 550.0 C 1 N/A N/A N/A Turbine-Generator taken off-line to begin scheduled maintenance and refueling outage.

I I #

F: Forced Reason: Method: Exhibit G - Instructions for Preparation of Data S: Scheduled A-Equipment Failure (Explain) 1-Manual Entry Sheets for Licensee Event Report (LER)

B-Maintenance or Test 2-Manual Scram File (NUREG-0161)

C-Refueling 3-Automatic Scram D-Regulatory Restriction 4-Continuation from E-Operator Training & License Examination Previous Month , Exhibit I - Same Source F-Administrative 5-Load Reduction

• Report challanges to Power Operated Relief Valves G-Operational Error (Explain) 9-Other (Explain) (PORVs) and Pressurizer Code Safety Valves (PCSVs) 1I-Other (Explain)

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